Answer: C. Doxylamine–Pyridoxine
Doxylamine/pyridoxine is the recommended first-line pharmacologic treatment for Hyperemesis gravidarum. From a biochemical perspective, pyridoxine (vitamin B₆) supports amino acid and neurotransmitter metabolism, while doxylamine, an H₁-histamine receptor antagonist, reduces activation of the vomiting center, providing effective symptom control with a well-established safety profile in pregnancy.
Clinical pearl: Metoclopramide, Ondansetron, and Promethazine are generally reserved for women whose symptoms persist despite first-line therapy.
Answer: C. ALT
Alanine aminotransferase (ALT) is the most specific enzyme for hepatocellular injury. Biochemically, ALT catalyzes the reversible transfer of an amino group between alanine and α-ketoglutarate, producing pyruvate and glutamate, and is found predominantly in the cytosol of hepatocytes. When hepatocyte membranes are damaged, ALT is released into the circulation, making it a sensitive marker of liver cell injury.
Clinical pearl: AST is less liver-specific because it is also abundant in cardiac muscle, skeletal muscle, kidneys, and erythrocytes, whereas ALP is more closely associated with cholestatic liver disease and biliary obstruction.
@kiddiewise_ Great explanation, Doc! Zinc's dual role in secretion block + mucosal repair is why it's a game-changer with ORS.
Thanks for breaking it down.
Zinc works directly on the intestinal cells. It blocks cyclic AMP mediated chloride secretion by inhibiting basolateral potassium channels, so less chloride enters the gut lumen and less water follows.
At the same time, it repairs damaged enterocytes, restores tight junction integrity, enhances sodium and water absorption, supports brush border enzymes, and boosts immune function.
This shortens diarrhoea, reduces stool volume, speeds intestinal healing, and lowers the risk of recurrent diarrhoeal episodes.
There is one cancer where doctors are strictly FORBIDDEN from doing a biopsy. Poking it with a needle will actually cause the tumor to spread. Which one is it?
A) Breast Cancer
B) Lung Cancer
C) Testicular Cancer
D) Prostate Cancer
Gout is often called the "Rich Man's Disease" as it is historically linked to heavy consumption of meat and wine. High purine content in red meat and alcohol raises uric acid levels in the blood, which then crystallizes in joints.
What are early signs of Gouty Arthritis?